Air-valve and trap.



B. C. WILLIAMS.

AIR VALVE AND TRAP.

APPLlCATION FILED MAR. 25, 1916.

1,2263%, Patented May15,1917.

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BERT C. WILLIAMS, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR OF THIRTY ONE- HUNDREDTHS TO FRED B. BAIN, OF SAN FRANCISCO, CALIFORNIA.

AIR-VALVE AND TRAP.

Application filed March 25, 1916.

To all whom it may concern Be it known that I, BERT C. VVILLIAMS, a citizen of the United States residing in the city and county of San Francisco and State of California, have invented new and use ful Improvements in Air-Valves and Traps, of which the following is a specification.

This invention relates to an air valve particularly constructed for use in connection with steam radiators.

One of the objects of the present invention is to provide an air valve particularly constructed for use in connection with steam radiators, which will not only serve as a vent for the air and permit the escape of a certain amount of steam, but which will also serve as a pressure reducer and a trap for any water which may accumulate from condensation.

Another object of the invention is to provide a heat-actuated thermostat control to regulate the flow of steam through the radiator, thereby making it possible to automatically maintain a predetermined temperature in the room, and furthermore, to provide an indicator which is raised to a visible position the moment the trap begins to fill with Water.

Further objects will hereinafter appear.

The invention consists of the parts and the construction and combination of parts, as hereinafter more fully described and claimed, having reference to the accompanying drawings, in which Figure l is a central, vertical section through the valve.

Fig. 2 is a cross section on line 22, Fig. 1.

Referring to the drawings in detail, A in dicates the cylinder or barrel of the valve. This cylinder is provided with a similar shaped externally threaded extension 2 for the purpose of permitting the valve as a whole to be connected with a steam radiator. Formed interiorly of the extension is a valve seat 4 for the reception of a valve 5, which is carried by a thermostat 6 mounted interiorly of the extension 2. The valve 5 is in this instance guided, so that perfect alinement with relation to the seat 4 is always maintained. This is accomplished by securing a pin 11 on the point of the valve which extends through the valve seat, indicated at 4c.

Specification of Letters Patent.

Patented May 15, 1917..

Serial No. 86,659.

Secured on the lower end of the casing A is a drain valve 14 and secured on the upper end of the casing is a cap 15 provided with a vent opening 16 and an interior valve seat 17. Mounted interior of the casing is a float, consisting of two sections 18 and 19. The section 19 consists of a tube which is open at the lower end, as indicated at 9.0. The upper section consists of a float which is provided with a valve 21 at its upper end, the two sections 18 and 19 being rigidly connected to move in unison.

The float as a whole with connected valve 21 is guided. interior of the casing to permit a perfect alinement of the valve 21 with relation to its seat 17 by means of lugs 22 formed on the interior of the casing or by any other suitable means, and the point of the valve is provided with a, pin 23 which is of suflicient length to extend through the cap 15 when the valve 21 is closed. The valve as a whole first of all serves as a vent for the escape of air and a certain amount of steam from the radiator, 2nd: It serves as a pressure reducing chamber for the steam which is admitted through the valve opening 11, 3rd:-The lower end of the casing serves as a trap for any water which may escape from the radiator or accumulate by condensation, and lth:The provision of the thermostat provides a means for regulating the escape of air and steam from the radiator, thus providing a means for automatically maintaining a pre determined temperature. The operation will be as follows:

lVith the valve as a Whole connected with the radiator and with valve 5'open, it will be seen that steam or air will be permitted to escape through the passage 12 and the valve opening 11 into the interior of the casing A, it is then permitted to escape through the vent 11 controlled by the valve The pressure of steam admitted through this opening is thus instantly reduced and any whistling sound is eliminated, as the escaping air passing through the vent 16 will not have sufficient velocity. The steam, however, immediately heats the disks of the thermostat and will thus cause these to expand and close the valve, only a small amount of the steam is thus permitted to escape. The valve will thus remain closed until the steam temperature in the radiator ment the temperature is sufliciently increased to expand the disks and close the valve. A predetermined temperature suitable for a room or for other installations is thus automatically maintained at all times without any regulation or adjustment on the part of an operator. 7

Any condensationof steam or water escaping from the radiator will drain and accumulate in the lower end of the casing. The water thus accumulated will instantly rise in the trap and Ifinally cause the float to' rise and close the valve 21. The pin, 23 will then project through the cap 15 and will thus display a warning which indicates that the trap is filled with water and should, therefore, be drained by opening the valve 14. No steam or water can escape from the valve casing A when the valve 21 is closed, thus making it impossible for any water to escape through the vent 16 and ruin the carpets or floors.

The device as a whole is simple and compact in construction; it not only serves asan automatic regulator as far as the temperature of the room is concerned, but also serves as a pressure reducer which prevents the annoying whistling sound generally emitted from most types of radiator valves, it furthermore serves as a trap for any condensation of water and is provided with a valve 1-]: to permit the water to be drained when a visible indication is given by the projected position of the pin 23. 1

The materials and finish of the several parts of the device may otherwise be such as the judgment and experience of the manufacturer may dictate.

I wish it understood that various changes in form, proportions and minor details of construction may be resorted to within the scope of the appended claims, and that I a float in the main chamber, a valve carried' by the upper end of the ifloat, and a controlled outlet at the bottom ofthe chamber. 7

, 2. An air and pres'sure'controlling trap, consisting of vertical and horizontal tubular united chambers, the vertical chamber having an escape passage and. valve seat at the top, a two-part float in said chamber and a valve carried by the upper end of the float,

a valve controlled opening from the horizontal chamber to the vertical one, connection from the horizontal chamber to a radiator, and thermostat located between said inlet and the valve.

trap, comprising a horizontal chamber connected at one end with the source of pressure, a guided valve closable upon a seat at the opposite end and a thermostat contactlng with the base of the valve,-a vertical chamher with the side of which the first named valve opening connects, a two part float having a valve at its upper end and an opening-and valve seat, with which said valve co-a-cts, a controlled discharge passage at the bottom of the chamber, and guides formed in the sides of the chamber to control the movements of the float and its valve.

In testimony whereof I have hereuntoset my hand in the presence of two subscribing witnesses. 7

. BERT C. WILLIAMS. Witnesses:

JOHN H. HERRING, W. IV. HEALEY.

Copies-of this patent may be obtained for five cents each, by addressing the Commissioner of ham Washington, D. G. I V

0. An air and vapor pressure controlling 

